VSS Software provider

NTFSD
5

Here is a link to the Volume Shadow Copy Service SDK 7.2. Get it if you
don’t have it already.

http://www.microsoft.com/downloads/details.aspx?FamilyID=0B4F56E4-0CCC-4626-
826A-ED2C4C95C871&displaylang=en

-Robert.

-----Original Message-----
From: xxxxx@lists.osr.com [mailto:bounce-413763-
xxxxx@lists.osr.com] On Behalf Of Maxim S. Shatskih
Sent: Monday, June 07, 2010 6:34 AM
To: Windows File Systems Devs Interest List
Subject: Re:[ntfsd] VSS Software provider

> “These providers are implemented as a user-mode DLL component and at
least one kernel-mode
>device driver, typically (but not necessarily) a storage filter
driver.”

I think VSS provider must be an EXE (LocalServer), not a DLL
(InprocServer).

> or the provider itself is a kernel mode component…

It is a COM LocalServer EXE which is called by the VSS service.

Its main difference from the Hardware VSS Provider is that the HW prov
works with physical disks, i.e. LUNs, and creates the snapshots of the
whole physical disk. On the other hand, SW prov creates snapshots of
the volumes (drive letters).

–
Maxim S. Shatskih
Windows DDK MVP
xxxxx@storagecraft.com
http://www.storagecraft.com

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